Lab-Grown Diamond Engagement Ring

Sunlight catches the elongated silhouette of a marquise diamond, its pointed ends drawing the eye along a graceful arc. This semi-set three-stone engagement ring frame awaits your choice of a 12 x 6 mm center stone, designed to showcase the marquise’s signature tapered drama and elegant elongation.

Crafted from warm 18K yellow gold, the mounting features a refined three-stone setting that balances artisanal detail with everyday wearability. The band’s subtle curvature and low-profile prongs ensure comfort and glove-friendly ease, while the hand-polished finish reveals the metal’s soft glow under any light.

Each ring is shaped in our Williamsburg studio, where sustainable practices meet expert craftsmanship—your lab-grown diamond center will reflect a commitment to ethical jewelry without compromise.

This design suits those who appreciate a statement piece that remains wearable daily, especially flattering on slender fingers or when stacked with complementary bands. The semi-set format invites personal selection of a marquise cut that resonates with your vision.

Resizing is available to ensure a precise fit, and our team guides you through care and lead times with quiet confidence.

Explore this piece in person at our Williamsburg workshop or begin your custom design journey online, where expert guidance meets Brooklyn’s artisanal spirit.

Haejin Jewelry stands as a Brooklyn fine-jewelry studio dedicated to lab-grown diamond engagement rings, blending ethical craftsmanship with local expertise to create pieces made for life’s most meaningful moments.

See how your design comes to life with our Ring Design Online, or start a truly custom piece from scratch in our Williamsburg studio.

Explore our Guides & Education and Stories & Lifestyle for diamond education, care tips, and real studio stories.